linux-kernel - Re: [PATCH] perf bpf: Fix memory leak during synthesis.

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Date:   Thu, 26 Aug 2021 13:32:13 +0530
From:   kajoljain <kjain@...ux.ibm.com>
To:     Ian Rogers <irogers@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     eranian@...gle.com
Subject: Re: [PATCH] perf bpf: Fix memory leak during synthesis.



On 8/26/21 5:46 AM, Ian Rogers wrote:
> BTF needs to be freed with btf_free.
> 
> Signed-off-by: Ian Rogers <irogers@...gle.com>
> ---
>  tools/perf/util/bpf-event.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/perf/util/bpf-event.c b/tools/perf/util/bpf-event.c
> index cdecda1ddd36..d193104db7f7 100644
> --- a/tools/perf/util/bpf-event.c
> +++ b/tools/perf/util/bpf-event.c
> @@ -296,7 +296,7 @@ static int perf_event__synthesize_one_bpf_prog(struct perf_session *session,
>  
>  out:
>  	free(info_linear);
> -	free(btf);
> +	btf__free(btf);

Hi Ian,
   Patch looks good to me. I can see in one more place we are using free(btf) in the
same file. Can you correct that as well.

Thanks,
Kajol Jain
   
>  	return err ? -1 : 0;
>  }
>  
>